I do think the tracks are markedly different; Kirkhope's track sounds like it's straight out of a Banjo game, Wise's sounds like it could fit in any Donkey Kong game, or in any generally tropical-themed game. Because of this, I actually think Wise's track fits this particular game better, because Yooka-Laylee has a more "tropical", "lush" vibe than the Banjo games did; from the animals chosen for the main characters, to the hub world style itself. Purely straight-from-a-Banjo-game music, to me, seems a bit at odds with the developing Yooka vibe, at least judging from the pre-alpha lush, green, sunny hub-world footage we've seen so far. That's just my first impressions though, I'm sure there will be situations in the game where one musical style will fit better with the scenery than the other.
Since there will be many different world themes, environments, and situations present in Yooka-Laylee, I think both musicians' work can comfortably fit within the same game, along with other contributors. Maybe they just shouldn't show up side-by-side, in the same or similar worlds or environments. But both can coexist.